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Table 4 Multivariable-adjusted and propensity score-stratified models with interaction variables

From: Propensity scores in the presence of effect modification: A case study using the comparison of mortality on hemodialysis versus peritoneal dialysis

  Multivariable-adjusted model Propensity score-stratified model
  HR (95% CI) HR (95% CI)
Age (per yr) 1.05 (1.04; 1.05) 1.05 (1.04; 1.05)
Female vs male gender 0.87 (0.83; 0.91) 0.87 (0.83; 0.91)
Primary renal disease vs GN* - - - -
HT 1.22 (1.10; 1.35) - -
RVD 1.68 (1.51; 1.85) - -
DM 5.65 (3.95; 8.09) 5.36 (3.73; 7.70)
Other 1.31 (1.21; 1.42) - -
Year of first RRT (per yr) 0.99 (0.99; 1.00) - -
Dialysis center 0.13 - 1.61# - -
Peritoneal vs hemodialysis 0.43 (0.32; 0.57) 0.44 (0.32; 0.60)
Age × Dialysis modality 1.01 (1.01; 1.02) 1.01 (1.01; 1.02)
DM × Dialysis modality 1.22 (1.08; 1.38) 1.23 (1.08; 1.40)
Age × DM 0.98 (0.98; 0.99) 0.98 (0.97; 0.99)
Gender × DM 1.20 (1.07; 1.34) 1.20 (1.07; 1.35)
  1. * Compared with GN as reference group.
  2. # Range of HRs.
  3. † Not presented because of range of HRs.
  4. yr = year, GN = glomerulonephritis, HT = hypertension, RVD = renovascular disease, DM = diabetes mellitus, RRT = renal replacement therapy, HR = hazard ratio